A buffer solution of volume 100.0 mL is 0.140 m Na2HPO4(aq) and 0.120 m KH2PO4(aq). (iii) What are the pH and the pH change resulting from the addition of 75.0 mL of 0.0100 m NaOH(aq) to the buffer solution

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Compound with sulfer  is bright red